Timer.



PATBNTED AUG. 20, 1907. RSON.

H. A. BUTLER 81; F. G. PETE TIMER. APPLICATION FILED JAN. 27,

w w wrw mflg v, L M? a fl Z 4 1 k m E m3 M m m W N y -UNITED srnrns PATENT OFFICE.

HARRY A. BUTLER AND FRANKLIN C. PETERSON, OF HAVERFORD, PENNSYLVANIA TIMER.

Specification of Letters Patent.

' Patented Aug. 20, 1907 Application filed January 27,1906. Serial No. 298,140

. To all whom it may concern:

Be it known that we, HARRY BUTLER and FRANK- LIN C. PETERSON, both citizens of the United States,

' and residents of Haverford, in the countyot Delaware and State oi Pennsylvania, have invented a new and Improved Timer, of which the following is a full, clear,

..and exact description.

which will be fully set forth hereinafter and particu larly pointed out in the claims.

Reference is to be had to the accompanying drawings, which illustrate as an example the preferred embodiment of our invention, in which drawings Figure 1 is a sectional view of the invention taken essentially on the line l-1 of Fig. 3; Fig.2 is a section on the line 2-2 or Fig. 3; and Fig. 3 is a side elevationof the device with its outer end and binding post removed? The body 10 of the device is constructed preferably of brass. It is adapted to be mounted in any suitable position and by any suitable means so that it may be rotated slightly as will be understood to persons skilled in the art. i

The body 10 is provided with 2. lug 11 having a pin 12 facilitating the connectionoialink or other device therewith, by means of which the body may be ad just-ed at will to advance or retard the spark.

14 indicates stay bolts which serve to fasten in place securely and rigidly the insulating outer wall 15 of the timer. This wall is spaced from the side of the body 10, as shown in Fig. 1.

Extending over the parts 10 and 15 is a tubular cover 16 which is preferably of metal, and which is formed with a key-hole slot 17. This slot is adapted to be engaged by a spring actuated lock pin 18 held by the body 10, said lock pin having as shown in Fig. 2 relatively narrow and thick portions, the thick portion being designed to enter theilarger part of the slot 17 tolock the cover in place, and the narrow portion of the pin being adapted to permit the removal of the cover. Said pin .18 is held in active position by means of a spring 19, and may be pressed back against the spring into inactive position. Said cover extends over the two parts 10 and 15 and completely incloses the inte rior of the timer.

The body 10 is provided with'a number of Contact pins 20, which areone for each cylinder of the engine in connection with which the timer is used. These pins are pressed outward by springs 21 and they are prevented from turning by means of laterally projecting studs 22 playing in slots 23 formed-in the body of the device. I

Each contact pin'is provided with iridium, platinum or other contact point 24, and is also formed with-a shoulder 25 at the inner side of the pin. With'the shoulders of these pins a cam disk or plate26 poa'cts said disk as shown best in Fig. 3-being'arranged against the, inner side of the body,10 and running over the shoulders 25 of the pin.

The disk is provided with an off-setornotched portion 27 which lies out of the plane of the body or main part of the d-isk, and as the disk rotates over the shoulders 25 the off-set portion 27' is successively moved opposite the pin 20 permitting the-spring 21 of said pin to force the pins outward, and as the off-set portion moves away from the pin, said pin is returned to its of this arrangement the cam plate causes the contact pins to normally take the inactive position shown in Fig. 2, and that as thecam plate successively presentsthe offset portion 27 to the pins, said pins are permitted to move outward into active position, as illustrated in Figsi'l and 3. The cam disk 26 is fastened to the head of a shaft 28, and through this shaft-said disk-is driven.

The shaft is revolubly mounted on the body and is adapted to have connection with a moving partoi the former position. It therefore follows, that by means engine to operate in correct unison therewith. This connection may be effected and the shaft may be mounted and driven by any desired means.

Fastened to the insulatingouter wall 15 of the timer are a number of contact pins 29 which extend through the wall and are held rigidly in place by means of nuts 30. These pins 29 are provided at their inner ends with platinum, iridium or other suitable sparking points 31, and said points are adapted to be successively engaged bythe points 24 of the pins 20. Said pins 29 are'provided at their outerends with stops 32. and 33 indicates collars which are freely slidablc on the pins and are pressed downward by springs 34. The pins 29 have openings 35 therein adapted to receive the wires of the primary circuit. The springs 34 press the collars out against the wires, as shown in Fig. 1, thus securely holding the wires in contactfbut avoiding the necessity and disadvantage of a thumb nut on each pin. i i 4 In the operation of the'den'ce the connections are made in the usual mannen the pins 20 forming one terminal and the pins 29 the second terminal. Upon the rotation of the shaft 28 and cam disk the contact pins 20 are successively permitted to move out into active position and then contact with the pins 29, thus cl sing may be controlled at will by changing the position of the body of the device with re p ct to t11e'c;1111p1-.11 1-. such being effected by a haud 11'\' 1-l' or other device in connection with 11101111: 11111111 pin 1'2. 11 will e observcil that the contact between the pins and Z9 is device insures durability and cfii c ient operationi -I1-.1ving thus described the preferred form of ourinvention. what we: claim as new. and desire to secure by Letters Patent is: I 4

1. A tinier comprising asliding. contact. means tending; to pre .the contact in one direction. and a rotary cam member engagingihe-contact, said member normally restraining and periodic-111v releasing the contact. I

4 f timer comprising a"slidin gcontact. means yielding the contact in one" direction. and a rotar cam disk engagingthe contact and havingan off-set perti1)n periodically re easing the contact.

A timer comprising a sliding contact, means yield ingly pressing the contact in" one direction. and a'cani' ro-- tat'iug in a plane disposed titan angle to the line of movementof the contact. the cam engaging-thecontact and having an ott set portion periodically releasing the contact.

1. A tiiner having a contact mounted to slide but not to turnf means yieldinglypressing the contact in one direction. and a cam disk running directly against he-contact and normalli' restraining the same, the carnhaving an 011"- set portion periodically releasing the contact.

5. A timer having :rconta'ct mounted to slide but not to turn and provided with a shouldery'ineans yieldingly ressing the contact in one direction; 'and a cam member running a ainst the shoulder. the cam member normally restrainhr and periodically releasing the cotuact.

6'. A timer having a sliding contact. means for preventing' the contact from turning. means ,vicldinglv pressing the contact: in one direction. the said contact having a :41l1ill1i1tl. :lll(1 a cam disk running in a plane extending at an angle to the line of movement to the contact and engagingthe shoulder of the same, said cam disk havingan all-set portion adapted periodically to release the contact.

7. A timer comprising a body. a rotary cam disk. said body being" adjustable relatively to the disk, a sliding contact mounted in the body and having a shoulder, and means tending vieldi1 1gl v to press the contact in one direction. the cam disk normally engaging the shoulder of the eontactand having an 011 301 portion periodically releasing the same. v

A timer comprising a body, a movable contact there 011. means for; e1n11rollln5 the movement of the contact. a second contact enacting with the first contact. an insulation wall mounting the second contact. said \vall being secured to and spaced fl'OllJ l'liC body. and a removable tubular cover extending around the wall and body.

9. A timer comprising a.b0d v having a cavity herein, and a slot adjacent'to the cavity, a contact movable in the cavity.v a lug projecting from thecontact and fitting loosely in the'slot. means yieldingly pressing the contact in one direction, and lineans for normally restraining and periodically releasing the contact. I

10. A timer comprising a body having a cavity therein and a slot communicating with the cavity. a contact pin irovabie longitudinally in the cavity. said pin being formed with a shoulder adjacent to its operating cnd, a lug proiecting fronrthe pin and fitting in the slot of the body, means yielding-1v pressing the contact pin in one direction.

and a cam disk rotating in a plane extending at an angle to the line of movement of the contact pin. and bc'arin: against the shoulder thereof, for the purpose specified.

In testimony whereof we have signed our name to 1111s specification in the presence of two subscribing witnesses.

' 11.111111? A. Bt'rLEn.

. FRANKLIN C. PETERSON. Witnesses Wrnmau S. )IANS, FLOYD A. II-vmx. 

